Senator Bernie Sanders has officially told Democratic strategist James Carville to start his own party. Recommended VideosThe tension started when Carville made it clear he would consider leaving the Democratic Party if popular Twitch streamer Hasan Piker becomes a fixture in the organization. If Mr. Carville doesn’t want to be in my party, the party I belong to, that Piker, that El-Sayed belongs to, he can start his own party.” Sanders: If Mr. Carville doesn't want to be in my party, he can start his own party. Sanders took the argument a step further by questioning what kind of party voters actually want to support.